Gregory Henderson is a New Zealand former professional track and road racing cyclist, who rode professionally between 2002 and 2017. His career includes winning the 15-kilometre (9.3-mile) scratch race at the 2004 world championships and, in road cycling, winning the points competition at the Tour de Georgia in 2005 and 2008.

The Tour de Georgia was a U.S. professional road cycling stage race across the state of Georgia. The race began in 2003 and was contested six times until 2008. It was one of the three events in North America ranked as Hors Classe (2.HC) stage race events by the UCI, which is cycling's international governing body, along with the Tour of Missouri and the Tour of California. The event was cancelled in 2009 and 2010, and despite its backers aiming for the race to be held again in 2011, it has not been held since.